Finding the Fourth Proportional to 76,739.16, 105,885.99 and 42,746.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,739.16 : 105,885.99 = 42,746.81 : x
2. Step 2: Convert to fraction form
   76,739.16/105,885.99 = 42,746.81/x
3. Step 3: Cross multiply
   76,739.16x = 105,885.99 × 42,746.81
4. Step 4: Simplify right side
   76,739.16x = 4,526,287,766.76
5. Step 5: Solve for x
   x = 4,526,287,766.76/76,739.16
6. Step 6: Final answer
   x = 58,982.76